From 8730e914d8059fc438cc79c9aa05d5726756be86 Mon Sep 17 00:00:00 2001
From: sternenseemann <sternenseemann@systemli.org>
Date: Fri, 9 Jan 2026 12:52:44 +0100
Subject: [PATCH] haskellPackages.hblosc: link against pkgs.c-blosc

---
 pkgs/development/haskell-modules/configuration-nix.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index fa0767896e69..e09a5a2d70ea 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -1005,6 +1005,11 @@ builtins.intersectAttrs super {
     '';
   }) super.sbv;
 
+  # Don't use vendored (and outdated) c-blosc library
+  hblosc = addPkgconfigDepends [
+    pkgs.c-blosc
+  ] (enableCabalFlag "externalBlosc" super.hblosc);
+
   # The test-suite requires a running PostgreSQL server.
   Frames-beam = dontCheck super.Frames-beam;